Vowed

Caitlin and Caleb find themselves in medieval Scotland, in 1350, a time of knights and shining armor, of castles and warriors, of the quest for the Holy Grail said to contain the key to true vampire immortality. Landing on the shores of the ancient Isle of Skye, a remote island off the Western coast of Scotland where only the most elite warriors live and train, they are ecstatic to reunite with Sam and Polly, Scarlet and Ruth, a human king and his warriors, and with all of Aiden's coven.